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RE: [802.3ae] Wan Interface Sublayer

> From: Jonathan Thatcher 
> Sent: Thursday, August 23, 2001 04:49 PM

> The entire jitter specification and test methodology for 
> SONET is different
> than in 802.3ae. This is due, in part, to the objectives for the two
> standards organizations and the history of the groups. In the 
> case of SONET,
> a primary objective is to limit jitter propagation (yes, this is a
> simplification); in 802.3ae, the primary objective is plug 
> and play (no
> engineered links; no jitter propagation). 

	Okay, but what does this translate to in terms of interoperability?
I see four possibilities:

	1.)  WIS will always route well over SONET, but SONET can not be
routed over XGBASE(name?) networks.

	2.)  WIS and SONET can run on each others' networks, but distances
must be kept relatively short and number of hops relatively low to meet
jitter/clocking specs.

	3.)  SONET will always route well over XGBASE(name?) networks, but
WIS can not be routed over SONET networks.

	4.)  WIS and SONET must stay on their own networks.

	Which would it be?

	Thanks all,